Car-brake



t 8 e h S S t e e h S 2 L L w M O R G J A q d 0 M 0 W OAR BRAKE.

Inventor Attorneys "a7. 1 Ummwell jZr VVz'tnesseS W v I N, PETERS. PhowLMu-agmpher, Wahingion. D412.

(No Model.) 2 Sheets-Sheet 2.,

A. J. GROMWELL.

CAR BRAKE.

No. 317,315. Patented May 5, 1885,

Winesses 4%, V

Attorneys NITFD Srares PATENT OFFICE.

ANDREW J. OROMlVELL, OF BALTIMORE, MARYLAND.

CAR-BRAKE.

EEwPECIFICATIQN forming part of Letters Patentlfiio. 317,315, dated May 5, 1885.

Application filed February 28, 1884.

To all whom it may concern:

Be it known that I, ANDREW J. GROM- WELL, a resident of Baltimore city, Maryland, have invented certain new and useful Improvements in Oar-Brakes, of which the following is a specification, reference being had to the accompanying drawings, forming part hereof, in which- Figure 1 is a section taken longitudinally through a car having my improvements applied, the plane of the section being between the wheels, and the car being broken away at two points to foreshorten it. Fig. 2 is a section transverse to that of Fig. 1. Figs. 3, 4, and 5 are detail views.

Like letters mark the same parts in all the figures.

My invention is designed to supply abrake which may be applied to a car, either between. the wheels of a truck or between the trucks, being shown applied toa coal-hopper, and to this end myinvention consists of the combination, arrangement, and construction of parts, which I shall now proceed to fully describe, and afterward specifically point out in the claims.

Referring to the drawings by letter,Ais the rail; B B 13 E the wheels. 0 G O O are the axles, D D the side rails or timbers, and E E the end rails or timbers. The outer side rail, D, is rectangular in section, and the inner one has its upper inner corner beveled off to provide for the reception of the inclined bottom of the hopper, which rests upon it. Near the end of each side rail is secured a bracket, a, from which by means of alink, b, is suspended a brake-shoe, 0, while similar brackets, a,near the center of the rails, support shoes 0 by means of links I).

The brackets,links,and shoes just described are secured by means of pivots, which permit the free movement of the links and shoes longitudinally of the car. The inner side rail is slotted out to receive the ends of a U-shaped loop or bow, d, which are secured to said rails by bolts which pass through holes d in the ends. The central portion of the bow is provided with slots (1 d in which work pins (1 (1 which support a block, 0, and allow it play on the bow.

In a perforation, e, in the lower end of the (No model.)

block e is pivoted a lever, f, whose ends project above and below the pivot, and are connected' at f f by links f 3 f 4 to the shoes 0. The lower end of the lever f extends below the pivot f 2 and has connected to it a rod, 9. A second loop or how, h, is secured by means of its bent ends h to the under side of the side rails, and is provided with slots h, to receive pins to support a block, 13, which is similar in construction and serves the same purposesviz., being a movable support for the pivot of the lever f. Each of the shoes 0 has at its central outer portion aperforation which serves, respectively, as bearing for elbow-levers jj, the lower vertical arm of the elbow-lever j being attached to a bar, 76, which carries at its outer end an equalizer, Z.

The rod g,heretofore referred to,is attached to the lower end of the equalizer, and a rod, g, which is secured at its opposite end to the lower arm of elbow-lever j, is attached to the upper end of said equalizer.

m m are spring-rods, which serve as supports for the cross-bars which connect the shoes 0 c with their fellows on the opposite side of the car, and which serve also to withdraw the shoes from engagement with the car-wheels.

The horizontal arm of the elbow-lever is connected to a rod or chain, n, by which power is applied to the brakes, and the corresponding arm of the elbow-leverj is swung by a bar or link, it, to the under side .of the end rail E.

The operation of my device may be described as follows: The brakes being out of action,as shown in Fig. l, and it being desired to apply them,force is applied in any well-known way, causing the chain or rod in to be carried upward. This causes the horizontal arm of the elbow-lever j to be moved upward, and the vertical arm thereof to be moved to the left, drawing on the equalizer Z and rods 9 g. The force applied to the rod g acts through the elbow-leverj to bring the shoe 0 at that end of the car against the wheel, and at the same time force the shoe 0 at the other end against its wheel. These parts would thus operate without the equalizer or any of the mechanism in the center of the car; but the equalizer distributes the force applied equally between the rods 9 g, with the result just stated as to rod 9, while the force applied to rod 9 draws the lever f to the left, moving it on its pivot in the block 6, and forcing the shoes 0 0 into eon-' tact with the wheels. The slots d d allow the movement of the block 6 in either direction, which play causes full contact of the shoes 0 c with the wheels, notwithstanding any unevenness in length of links f f or in thickness of the shoes. The shoes are always permitted to move freely, and prevented from rising by the links I) b b I).

By means of the construction described brakes may be applied between the central wheels of coal hoppers without any inter ference with or by the hoppers,and without the necessity of any connection across the car, each side being entirely independent. 7

I claim- 1. The combination, substantially as described, of the shoes 0' 0, links f 3 f, lever f, and movable pivot on which said lever is mounted, as set forth.

2. A pair of brakeshoes mounted between .b b, elbow-levers j j, equalizer is, rods 9 g, le-

ver f, having sliding pivot, hangers b b, and shoes 0 c, as set forth.

5. The combination of hangers (1, having slots d block e,having pins to enter said slots, lever f,pivoted in said block 6, linksf f and shoes 0 c, as set forth. W W

In witness whereof I have hereunto set my W hand in presence of two witnesses.

ANDREW J. OROMWELL. Witnesses:

S. BRASHEARS, O. R. WVEAVER. 

